Quote:
Originally Posted by SumDizzy
I'm in the process of self tuning my 2018 turbo'd 86. I'm using Ecutek's Forced Induction tuning guide as a jumping off point. Given their guide and tune is based off a 2013MY EU car, there's probably some differences I haven't been able to surface on my own yet.
I've run into an issue where during a 3rd gear WOT I hear a very unpleasant noise from the engine around 5k RPM. I've never heard anything like this before, but I'm chalking it to aggressive knocking because I believe my AFR is too high. Here's the datazap.
Interestingly it seems like my target AFR refuses to drop to where I have my fuel map tuned to. Where the engine speed peaks at 5300 RPM, the datalog says both my AFR target and actual are around 14.3. If it was following my fuel map, the AFT target (at least) should've been 11.6. Hoping someone can point me in the right direction. |
Does it sound like a tin can resonating at 4600-5100rpm, like the cylinder is hollow and echoing suddenly, and then go away?